metadata-parser

A Chef cookbook metadata dependency parser lib for Golang

What, WHY?

Because although the chef-server understands and spews metadata as JSON all of the userspace tooling speaks the ruby form (see knife). That ruby form is what everyone puts in cookbooks, and in almost all cases the .json form isn't checked into repos :|

I needed a way to dependably parse name,version, and dependency info from cookbook metadata. I could have regexed, but I was interested in writing a toke-parser in Golang

Usage

Using this is pretty simple, just create a new parser from any io.Reader, and Parse().

meta, err := metadata.NewParser(strings.NewReader(metadata)).Parse()
if err != nil {
  fmt.Println(" Error parsing: ", err)
  t.Fail()
}

fmt.Println("Name: ", meta.Name)
fmt.Println("Version:", meta.Version)
for i, dep := range(meta.Depends) {
  fmt.Printf("\tdepends: %s@%s\n", dep.Name, dep.Constraint)
}

Contributing

Please contribute and help improve this project!

Fork the repo
Make sure the tests pass
Improve the code
Make sure your feature has test coverage
Make sure the tests pass
Submit a pull request

Thanks

Thanks to the InfluxDB team for MIT licensing their sql parser. Much of this code is derived from their impelemtnation: https://github.com/influxdb/influxdb Also thanks to GopherAcademy for this awesome article on writing lexers and parsers in Go: http://blog.gopheracademy.com/advent-2014/parsers-lexers/

License

go-chef/metadata-parser

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